1 | |
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2 | #include "xcache.h" |
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3 | #include "stack.h" |
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4 | #include "xcache_globals.h" |
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5 | #include "utils.h" |
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6 | #ifdef ZEND_ENGINE_2_1 |
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7 | #include "zend_vm.h" |
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8 | #endif |
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9 | #include "opcode_spec.h" |
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10 | #undef NDEBUG |
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11 | #include "assert.h" |
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12 | |
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13 | #ifndef max |
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14 | #define max(a, b) ((a) < (b) ? (b) : (a)) |
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15 | #endif |
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16 | |
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17 | #ifndef ZEND_VM_SET_OPCODE_HANDLER |
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18 | # define ZEND_VM_SET_OPCODE_HANDLER(opline) do { } while (0) |
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19 | #endif |
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20 | |
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21 | #define OP_ZVAL_DTOR(op) do { \ |
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22 | (op).u.constant.is_ref = 0; \ |
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23 | zval_dtor(&(op).u.constant); \ |
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24 | } while(0) |
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25 | xc_compile_result_t *xc_compile_result_init(xc_compile_result_t *cr, /* {{{ */ |
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26 | zend_op_array *op_array, |
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27 | HashTable *function_table, |
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28 | HashTable *class_table) |
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29 | { |
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30 | if (cr) { |
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31 | cr->alloc = 0; |
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32 | } |
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33 | else { |
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34 | cr = emalloc(sizeof(xc_compile_result_t)); |
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35 | cr->alloc = 1; |
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36 | } |
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37 | cr->op_array = op_array; |
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38 | cr->function_table = function_table; |
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39 | cr->class_table = class_table; |
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40 | return cr; |
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41 | } |
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42 | /* }}} */ |
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43 | xc_compile_result_t *xc_compile_result_init_cur(xc_compile_result_t *cr, zend_op_array *op_array TSRMLS_DC) /* {{{ */ |
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44 | { |
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45 | return xc_compile_result_init(cr, op_array, CG(function_table), CG(class_table)); |
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46 | } |
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47 | /* }}} */ |
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48 | void xc_compile_result_free(xc_compile_result_t *cr) /* {{{ */ |
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49 | { |
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50 | if (cr->alloc) { |
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51 | efree(cr); |
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52 | } |
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53 | } |
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54 | /* }}} */ |
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55 | |
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56 | int xc_apply_function(zend_function *zf, apply_func_t applyer TSRMLS_DC) /* {{{ */ |
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57 | { |
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58 | switch (zf->type) { |
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59 | case ZEND_USER_FUNCTION: |
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60 | case ZEND_EVAL_CODE: |
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61 | return applyer(&zf->op_array TSRMLS_CC); |
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62 | break; |
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63 | |
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64 | case ZEND_INTERNAL_FUNCTION: |
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65 | case ZEND_OVERLOADED_FUNCTION: |
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66 | break; |
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67 | |
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68 | EMPTY_SWITCH_DEFAULT_CASE(); |
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69 | } |
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70 | return 0; |
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71 | } |
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72 | /* }}} */ |
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73 | typedef struct { |
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74 | apply_func_t applyer; |
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75 | zend_class_entry *ce; |
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76 | } xc_apply_method_info; |
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77 | int xc_apply_method(zend_function *zf, xc_apply_method_info *mi TSRMLS_DC) /* {{{ */ |
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78 | { |
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79 | /* avoid duplicate apply for shadowed method */ |
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80 | #ifdef ZEND_ENGINE_2 |
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81 | if (mi->ce != zf->common.scope) { |
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82 | /* fprintf(stderr, "avoided duplicate %s\n", zf->common.function_name); */ |
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83 | return 0; |
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84 | } |
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85 | #else |
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86 | char *name = zf->common.function_name; |
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87 | int name_s = strlen(name) + 1; |
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88 | zend_class_entry *ce; |
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89 | zend_function *ptr; |
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90 | |
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91 | for (ce = mi->ce->parent; ce; ce = ce->parent) { |
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92 | if (zend_hash_find(&ce->function_table, name, name_s, (void **) &ptr) == SUCCESS) { |
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93 | if (ptr->op_array.refcount == zf->op_array.refcount) { |
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94 | return 0; |
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95 | } |
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96 | } |
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97 | } |
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98 | #endif |
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99 | return xc_apply_function(zf, mi->applyer TSRMLS_CC); |
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100 | } |
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101 | /* }}} */ |
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102 | #if 0 |
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103 | int xc_apply_class(zend_class_entry *ce, apply_func_t applyer TSRMLS_DC) /* {{{ */ |
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104 | { |
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105 | xc_apply_method_info mi; |
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106 | |
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107 | mi.applyer = applyer; |
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108 | mi.ce = ce; |
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109 | zend_hash_apply_with_argument(&(ce->function_table), (apply_func_arg_t) xc_apply_method, &mi TSRMLS_CC); |
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110 | return 0; |
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111 | } |
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112 | /* }}} */ |
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113 | #endif |
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114 | static int xc_apply_cest(xc_cest_t *cest, apply_func_t applyer TSRMLS_DC) /* {{{ */ |
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115 | { |
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116 | xc_apply_method_info mi; |
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117 | |
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118 | mi.applyer = applyer; |
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119 | mi.ce = CestToCePtr(*cest); |
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120 | zend_hash_apply_with_argument(&(CestToCePtr(*cest)->function_table), (apply_func_arg_t) xc_apply_method, &mi TSRMLS_CC); |
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121 | return 0; |
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122 | } |
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123 | /* }}} */ |
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124 | int xc_apply_op_array(xc_compile_result_t *cr, apply_func_t applyer TSRMLS_DC) /* {{{ */ |
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125 | { |
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126 | zend_hash_apply_with_argument(cr->function_table, (apply_func_arg_t) xc_apply_function, (void *) applyer TSRMLS_CC); |
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127 | zend_hash_apply_with_argument(cr->class_table, (apply_func_arg_t) xc_apply_cest, (void *) applyer TSRMLS_CC); |
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128 | |
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129 | return applyer(cr->op_array TSRMLS_CC); |
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130 | } |
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131 | /* }}} */ |
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132 | |
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133 | int xc_undo_pass_two(zend_op_array *op_array TSRMLS_DC) /* {{{ */ |
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134 | { |
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135 | zend_op *opline, *end; |
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136 | |
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137 | if (!op_array->done_pass_two) { |
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138 | return 0; |
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139 | } |
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140 | |
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141 | opline = op_array->opcodes; |
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142 | end = opline + op_array->last; |
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143 | while (opline < end) { |
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144 | #ifdef ZEND_ENGINE_2_1 |
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145 | switch (opline->opcode) { |
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146 | case ZEND_JMP: |
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147 | opline->op1.u.opline_num = opline->op1.u.jmp_addr - op_array->opcodes; |
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148 | assert(opline->op1.u.opline_num < op_array->last); |
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149 | break; |
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150 | case ZEND_JMPZ: |
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151 | case ZEND_JMPNZ: |
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152 | case ZEND_JMPZ_EX: |
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153 | case ZEND_JMPNZ_EX: |
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154 | opline->op2.u.opline_num = opline->op2.u.jmp_addr - op_array->opcodes; |
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155 | assert(opline->op2.u.opline_num < op_array->last); |
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156 | break; |
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157 | } |
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158 | #endif |
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159 | opline++; |
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160 | } |
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161 | op_array->done_pass_two = 0; |
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162 | |
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163 | return 0; |
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164 | } |
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165 | /* }}} */ |
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166 | int xc_redo_pass_two(zend_op_array *op_array TSRMLS_DC) /* {{{ */ |
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167 | { |
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168 | zend_op *opline, *end; |
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169 | |
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170 | if (op_array->done_pass_two) { |
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171 | return 0; |
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172 | } |
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173 | |
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174 | /* |
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175 | op_array->opcodes = (zend_op *) erealloc(op_array->opcodes, sizeof(zend_op)*op_array->last); |
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176 | op_array->size = op_array->last; |
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177 | */ |
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178 | |
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179 | opline = op_array->opcodes; |
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180 | end = opline + op_array->last; |
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181 | while (opline < end) { |
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182 | if (opline->op1.op_type == IS_CONST) { |
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183 | opline->op1.u.constant.is_ref = 1; |
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184 | opline->op1.u.constant.refcount = 2; /* Make sure is_ref won't be reset */ |
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185 | } |
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186 | if (opline->op2.op_type == IS_CONST) { |
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187 | opline->op2.u.constant.is_ref = 1; |
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188 | opline->op2.u.constant.refcount = 2; |
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189 | } |
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190 | #ifdef ZEND_ENGINE_2_1 |
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191 | switch (opline->opcode) { |
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192 | case ZEND_JMP: |
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193 | assert(opline->op1.u.opline_num < op_array->last); |
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194 | opline->op1.u.jmp_addr = op_array->opcodes + opline->op1.u.opline_num; |
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195 | break; |
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196 | case ZEND_JMPZ: |
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197 | case ZEND_JMPNZ: |
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198 | case ZEND_JMPZ_EX: |
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199 | case ZEND_JMPNZ_EX: |
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200 | assert(opline->op2.u.opline_num < op_array->last); |
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201 | opline->op2.u.jmp_addr = op_array->opcodes + opline->op2.u.opline_num; |
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202 | break; |
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203 | } |
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204 | ZEND_VM_SET_OPCODE_HANDLER(opline); |
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205 | #endif |
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206 | opline++; |
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207 | } |
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208 | |
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209 | op_array->done_pass_two = 1; |
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210 | return 0; |
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211 | } |
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212 | /* }}} */ |
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213 | |
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214 | #ifdef HAVE_XCACHE_OPCODE_SPEC_DEF |
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215 | static void xc_fix_opcode_ex_znode(int tofix, xc_op_spec_t spec, znode *znode, int type TSRMLS_DC) /* {{{ */ |
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216 | { |
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217 | #ifdef ZEND_ENGINE_2 |
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218 | if ((znode->op_type != IS_UNUSED && (spec == OPSPEC_UCLASS || spec == OPSPEC_CLASS)) || |
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219 | spec == OPSPEC_FETCH) { |
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220 | if (tofix) { |
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221 | switch (znode->op_type) { |
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222 | case IS_VAR: |
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223 | case IS_TMP_VAR: |
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224 | break; |
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225 | |
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226 | default: |
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227 | /* TODO: data lost, find a way to keep it */ |
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228 | /* assert(znode->op_type == IS_CONST); */ |
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229 | znode->op_type = IS_TMP_VAR; |
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230 | } |
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231 | } |
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232 | } |
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233 | switch (znode->op_type) { |
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234 | case IS_TMP_VAR: |
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235 | case IS_VAR: |
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236 | if (tofix) { |
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237 | znode->u.var /= sizeof(temp_variable); |
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238 | } |
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239 | else { |
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240 | znode->u.var *= sizeof(temp_variable); |
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241 | } |
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242 | } |
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243 | #endif |
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244 | } |
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245 | /* }}} */ |
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246 | |
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247 | static void xc_fix_opcode_ex(zend_op_array *op_array, int tofix TSRMLS_DC) /* {{{ */ |
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248 | { |
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249 | zend_op *opline; |
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250 | zend_uint i; |
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251 | |
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252 | opline = op_array->opcodes; |
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253 | for (i = 0; i < op_array->last; i ++, opline ++) { |
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254 | /* 3rd optimizer may have ... */ |
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255 | if (opline->opcode < xc_get_opcode_spec_count()) { |
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256 | const xc_opcode_spec_t *spec; |
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257 | spec = xc_get_opcode_spec(opline->opcode); |
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258 | |
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259 | xc_fix_opcode_ex_znode(tofix, spec->op1, &opline->op1, 0 TSRMLS_CC); |
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260 | xc_fix_opcode_ex_znode(tofix, spec->op2, &opline->op2, 1 TSRMLS_CC); |
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261 | xc_fix_opcode_ex_znode(tofix, spec->res, &opline->result, 2 TSRMLS_CC); |
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262 | } |
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263 | } |
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264 | } |
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265 | /* }}} */ |
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266 | int xc_fix_opcode(zend_op_array *op_array TSRMLS_DC) /* {{{ */ |
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267 | { |
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268 | xc_fix_opcode_ex(op_array, 1 TSRMLS_CC); |
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269 | return 0; |
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270 | } |
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271 | /* }}} */ |
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272 | int xc_undo_fix_opcode(zend_op_array *op_array TSRMLS_DC) /* {{{ */ |
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273 | { |
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274 | xc_fix_opcode_ex(op_array, 0 TSRMLS_CC); |
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275 | |
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276 | return 0; |
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277 | } |
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278 | /* }}} */ |
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279 | #endif |
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280 | |
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281 | int xc_foreach_early_binding_class(zend_op_array *op_array, void (*callback)(zend_op *opline, int oplineno, void *data TSRMLS_DC), void *data TSRMLS_DC) /* {{{ */ |
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282 | { |
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283 | zend_op *opline, *begin, *end, *next = NULL; |
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284 | |
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285 | opline = begin = op_array->opcodes; |
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286 | end = opline + op_array->last; |
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287 | while (opline < end) { |
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288 | switch (opline->opcode) { |
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289 | case ZEND_JMP: |
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290 | next = begin + opline->op1.u.opline_num; |
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291 | break; |
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292 | |
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293 | case ZEND_JMPZNZ: |
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294 | next = begin + max(opline->op2.u.opline_num, opline->extended_value); |
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295 | break; |
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296 | |
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297 | case ZEND_JMPZ: |
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298 | case ZEND_JMPNZ: |
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299 | case ZEND_JMPZ_EX: |
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300 | case ZEND_JMPNZ_EX: |
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301 | next = begin + opline->op2.u.opline_num; |
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302 | break; |
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303 | |
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304 | case ZEND_RETURN: |
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305 | opline = end; |
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306 | break; |
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307 | |
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308 | #ifdef ZEND_ENGINE_2 |
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309 | case ZEND_DECLARE_INHERITED_CLASS: |
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310 | callback(opline, opline - begin, data TSRMLS_CC); |
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311 | break; |
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312 | #else |
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313 | case ZEND_DECLARE_FUNCTION_OR_CLASS: |
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314 | if (opline->extended_value == ZEND_DECLARE_INHERITED_CLASS) { |
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315 | callback(opline, opline - begin, data TSRMLS_CC); |
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316 | } |
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317 | break; |
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318 | #endif |
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319 | } |
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320 | |
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321 | if (opline < next) { |
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322 | opline = next; |
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323 | } |
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324 | else { |
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325 | opline ++; |
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326 | } |
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327 | } |
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328 | return SUCCESS; |
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329 | } |
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330 | /* }}} */ |
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331 | static int xc_do_early_binding(zend_op_array *op_array, HashTable *class_table, int oplineno TSRMLS_DC) /* {{{ */ |
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332 | { |
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333 | zend_op *opline; |
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334 | |
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335 | TRACE("binding %d", oplineno); |
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336 | assert(oplineno >= 0); |
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337 | |
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338 | /* do early binding */ |
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339 | opline = &(op_array->opcodes[oplineno]); |
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340 | |
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341 | switch (opline->opcode) { |
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342 | #ifdef ZEND_ENGINE_2 |
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343 | case ZEND_DECLARE_INHERITED_CLASS: |
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344 | { |
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345 | zval *parent_name; |
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346 | zend_class_entry **pce; |
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347 | |
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348 | /* don't early-bind classes that implement interfaces */ |
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349 | if ((opline + 1)->opcode == ZEND_FETCH_CLASS && (opline + 2)->opcode == ZEND_ADD_INTERFACE) { |
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350 | return FAILURE; |
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351 | } |
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352 | |
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353 | parent_name = &(opline - 1)->op2.u.constant; |
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354 | TRACE("binding with parent %s", Z_STRVAL_P(parent_name)); |
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355 | if (zend_lookup_class(Z_STRVAL_P(parent_name), Z_STRLEN_P(parent_name), &pce TSRMLS_CC) == FAILURE) { |
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356 | return FAILURE; |
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357 | } |
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358 | |
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359 | if (do_bind_inherited_class(opline, class_table, *pce, 1 TSRMLS_CC) == NULL) { |
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360 | return FAILURE; |
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361 | } |
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362 | } |
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363 | |
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364 | /* clear unnecessary ZEND_FETCH_CLASS opcode */ |
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365 | if (opline > op_array->opcodes |
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366 | && (opline - 1)->opcode == ZEND_FETCH_CLASS) { |
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367 | zend_op *fetch_class_opline = opline - 1; |
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368 | |
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369 | TRACE("%s %p", Z_STRVAL(fetch_class_opline->op2.u.constant), Z_STRVAL(fetch_class_opline->op2.u.constant)); |
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370 | OP_ZVAL_DTOR(fetch_class_opline->op2); |
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371 | fetch_class_opline->opcode = ZEND_NOP; |
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372 | ZEND_VM_SET_OPCODE_HANDLER(fetch_class_opline); |
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373 | memset(&fetch_class_opline->op1, 0, sizeof(znode)); |
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374 | memset(&fetch_class_opline->op2, 0, sizeof(znode)); |
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375 | SET_UNUSED(fetch_class_opline->op1); |
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376 | SET_UNUSED(fetch_class_opline->op2); |
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377 | SET_UNUSED(fetch_class_opline->result); |
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378 | } |
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379 | |
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380 | /* clear unnecessary ZEND_VERIFY_ABSTRACT_CLASS opcode */ |
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381 | if ((opline + 1)->opcode == ZEND_VERIFY_ABSTRACT_CLASS) { |
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382 | zend_op *abstract_op = opline + 1; |
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383 | memset(abstract_op, 0, sizeof(abstract_op[0])); |
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384 | abstract_op->lineno = 0; |
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385 | SET_UNUSED(abstract_op->op1); |
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386 | SET_UNUSED(abstract_op->op2); |
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387 | SET_UNUSED(abstract_op->result); |
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388 | abstract_op->opcode = ZEND_NOP; |
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389 | ZEND_VM_SET_OPCODE_HANDLER(abstract_op); |
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390 | } |
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391 | #else |
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392 | case ZEND_DECLARE_FUNCTION_OR_CLASS: |
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393 | if (do_bind_function_or_class(opline, NULL, class_table, 1) == FAILURE) { |
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394 | return FAILURE; |
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395 | } |
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396 | #endif |
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397 | break; |
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398 | |
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399 | default: |
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400 | return FAILURE; |
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401 | } |
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402 | |
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403 | zend_hash_del(class_table, opline->op1.u.constant.value.str.val, opline->op1.u.constant.value.str.len); |
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404 | OP_ZVAL_DTOR(opline->op1); |
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405 | OP_ZVAL_DTOR(opline->op2); |
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406 | opline->opcode = ZEND_NOP; |
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407 | ZEND_VM_SET_OPCODE_HANDLER(opline); |
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408 | memset(&opline->op1, 0, sizeof(znode)); |
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409 | memset(&opline->op2, 0, sizeof(znode)); |
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410 | SET_UNUSED(opline->op1); |
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411 | SET_UNUSED(opline->op2); |
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412 | return SUCCESS; |
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413 | } |
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414 | /* }}} */ |
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415 | |
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416 | #ifdef HAVE_XCACHE_CONSTANT |
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417 | void xc_install_constant(char *filename, zend_constant *constant, zend_uchar type, zstr key, uint len TSRMLS_DC) /* {{{ */ |
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418 | { |
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419 | if (zend_u_hash_add(EG(zend_constants), type, key, len, |
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420 | constant, sizeof(zend_constant), |
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421 | NULL |
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422 | ) == FAILURE) { |
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423 | CG(zend_lineno) = 0; |
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424 | #ifdef IS_UNICODE |
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425 | zend_error(E_NOTICE, "Constant %R already defined", type, key); |
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426 | #else |
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427 | zend_error(E_NOTICE, "Constant %s already defined", key); |
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428 | #endif |
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429 | free(ZSTR_V(constant->name)); |
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430 | if (!(constant->flags & CONST_PERSISTENT)) { |
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431 | zval_dtor(&constant->value); |
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432 | } |
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433 | } |
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434 | } |
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435 | /* }}} */ |
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436 | #endif |
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437 | void xc_install_function(char *filename, zend_function *func, zend_uchar type, zstr key, uint len TSRMLS_DC) /* {{{ */ |
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438 | { |
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439 | zend_bool istmpkey; |
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440 | |
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441 | if (func->type == ZEND_USER_FUNCTION) { |
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442 | #ifdef IS_UNICODE |
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443 | istmpkey = (type == IS_STRING && ZSTR_S(key)[0] == 0) || ZSTR_U(key)[0] == 0; |
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444 | #else |
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445 | istmpkey = ZSTR_S(key)[0] == 0; |
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446 | #endif |
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447 | if (istmpkey) { |
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448 | zend_u_hash_update(CG(function_table), type, key, len, |
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449 | func, sizeof(zend_op_array), |
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450 | NULL |
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451 | ); |
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452 | } |
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453 | else if (zend_u_hash_add(CG(function_table), type, key, len, |
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454 | func, sizeof(zend_op_array), |
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455 | NULL |
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456 | ) == FAILURE) { |
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457 | CG(zend_lineno) = ZESW(func->op_array.opcodes[0].lineno, func->op_array.line_start); |
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458 | #ifdef IS_UNICODE |
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459 | zend_error(E_ERROR, "Cannot redeclare %R()", type, key); |
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460 | #else |
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461 | zend_error(E_ERROR, "Cannot redeclare %s()", key); |
---|
462 | #endif |
---|
463 | } |
---|
464 | } |
---|
465 | } |
---|
466 | /* }}} */ |
---|
467 | ZESW(xc_cest_t *, void) xc_install_class(char *filename, xc_cest_t *cest, int oplineno, zend_uchar type, zstr key, uint len TSRMLS_DC) /* {{{ */ |
---|
468 | { |
---|
469 | zend_bool istmpkey; |
---|
470 | zend_class_entry *cep = CestToCePtr(*cest); |
---|
471 | ZESW(void *stored_ce_ptr, NOTHING); |
---|
472 | |
---|
473 | #ifdef IS_UNICODE |
---|
474 | istmpkey = (type == IS_STRING && ZSTR_S(key)[0] == 0) || ZSTR_U(key)[0] == 0; |
---|
475 | #else |
---|
476 | istmpkey = ZSTR_S(key)[0] == 0; |
---|
477 | #endif |
---|
478 | if (istmpkey) { |
---|
479 | zend_u_hash_update(CG(class_table), type, key, len, |
---|
480 | cest, sizeof(xc_cest_t), |
---|
481 | ZESW(&stored_ce_ptr, NULL) |
---|
482 | ); |
---|
483 | if (oplineno != -1) { |
---|
484 | xc_do_early_binding(CG(active_op_array), CG(class_table), oplineno TSRMLS_CC); |
---|
485 | } |
---|
486 | } |
---|
487 | else if (zend_u_hash_add(CG(class_table), type, key, len, |
---|
488 | cest, sizeof(xc_cest_t), |
---|
489 | ZESW(&stored_ce_ptr, NULL) |
---|
490 | ) == FAILURE) { |
---|
491 | CG(zend_lineno) = ZESW(0, cep->line_start); |
---|
492 | #ifdef IS_UNICODE |
---|
493 | zend_error(E_ERROR, "Cannot redeclare class %R", type, cep->name); |
---|
494 | #else |
---|
495 | zend_error(E_ERROR, "Cannot redeclare class %s", cep->name); |
---|
496 | #endif |
---|
497 | assert(oplineno == -1); |
---|
498 | } |
---|
499 | ZESW(return (xc_cest_t *) stored_ce_ptr, NOTHING); |
---|
500 | } |
---|
501 | /* }}} */ |
---|
502 | |
---|
503 | /* sandbox {{{ */ |
---|
504 | #undef TG |
---|
505 | #undef OG |
---|
506 | #define TG(x) (sandbox->tmp_##x) |
---|
507 | #define OG(x) (sandbox->orig_##x) |
---|
508 | /* }}} */ |
---|
509 | #ifdef ZEND_ENGINE_2_1 |
---|
510 | static zend_bool xc_auto_global_callback(char *name, uint name_len TSRMLS_DC) /* {{{ */ |
---|
511 | { |
---|
512 | zend_auto_global *auto_global; |
---|
513 | if (zend_u_hash_find(CG(auto_globals), UG(unicode) ? IS_UNICODE : IS_STRING, ZSTR(name), name_len + 1, (void **) &auto_global) == FAILURE) { |
---|
514 | return 1; |
---|
515 | } |
---|
516 | return 0; |
---|
517 | } |
---|
518 | /* }}} */ |
---|
519 | static int xc_auto_global_arm(zend_auto_global *auto_global TSRMLS_DC) /* {{{ */ |
---|
520 | { |
---|
521 | if (auto_global->auto_global_callback) { |
---|
522 | auto_global->armed = 1; |
---|
523 | auto_global->auto_global_callback = xc_auto_global_callback; |
---|
524 | } |
---|
525 | else { |
---|
526 | auto_global->armed = 0; |
---|
527 | } |
---|
528 | return ZEND_HASH_APPLY_KEEP; |
---|
529 | } |
---|
530 | /* }}} */ |
---|
531 | #endif |
---|
532 | |
---|
533 | void xc_zend_class_add_ref(zend_class_entry ZESW(*ce, **ce)) |
---|
534 | { |
---|
535 | #ifdef ZEND_ENGINE_2 |
---|
536 | (*ce)->refcount++; |
---|
537 | #else |
---|
538 | (*ce->refcount)++; |
---|
539 | #endif |
---|
540 | } |
---|
541 | |
---|
542 | xc_sandbox_t *xc_sandbox_init(xc_sandbox_t *sandbox, char *filename TSRMLS_DC) /* {{{ */ |
---|
543 | { |
---|
544 | HashTable *h; |
---|
545 | |
---|
546 | if (sandbox) { |
---|
547 | memset(sandbox, 0, sizeof(sandbox[0])); |
---|
548 | } |
---|
549 | else { |
---|
550 | ECALLOC_ONE(sandbox); |
---|
551 | sandbox->alloc = 1; |
---|
552 | } |
---|
553 | |
---|
554 | memcpy(&OG(included_files), &EG(included_files), sizeof(EG(included_files))); |
---|
555 | |
---|
556 | #ifdef HAVE_XCACHE_CONSTANT |
---|
557 | OG(zend_constants) = EG(zend_constants); |
---|
558 | EG(zend_constants) = &TG(zend_constants); |
---|
559 | #endif |
---|
560 | |
---|
561 | OG(function_table) = CG(function_table); |
---|
562 | CG(function_table) = &TG(function_table); |
---|
563 | |
---|
564 | OG(class_table) = CG(class_table); |
---|
565 | CG(class_table) = &TG(class_table); |
---|
566 | EG(class_table) = CG(class_table); |
---|
567 | |
---|
568 | #ifdef ZEND_ENGINE_2_1 |
---|
569 | OG(auto_globals) = CG(auto_globals); |
---|
570 | CG(auto_globals) = &TG(auto_globals); |
---|
571 | #endif |
---|
572 | |
---|
573 | TG(included_files) = &EG(included_files); |
---|
574 | |
---|
575 | zend_hash_init_ex(TG(included_files), 5, NULL, NULL, 0, 1); |
---|
576 | #ifdef HAVE_XCACHE_CONSTANT |
---|
577 | h = OG(zend_constants); |
---|
578 | zend_hash_init_ex(&TG(zend_constants), 20, NULL, h->pDestructor, h->persistent, h->bApplyProtection); |
---|
579 | #endif |
---|
580 | h = OG(function_table); |
---|
581 | zend_hash_init_ex(&TG(function_table), 128, NULL, h->pDestructor, h->persistent, h->bApplyProtection); |
---|
582 | { |
---|
583 | zend_function tmp_func; |
---|
584 | zend_hash_copy(&TG(function_table), &XG(internal_function_table), (copy_ctor_func_t) function_add_ref, (void *) &tmp_func, sizeof(tmp_func)); |
---|
585 | } |
---|
586 | TG(internal_function_tail) = TG(function_table).pListTail; |
---|
587 | |
---|
588 | h = OG(class_table); |
---|
589 | zend_hash_init_ex(&TG(class_table), 16, NULL, h->pDestructor, h->persistent, h->bApplyProtection); |
---|
590 | #if 0 && TODO |
---|
591 | { |
---|
592 | xc_cest_t tmp_cest; |
---|
593 | zend_hash_copy(&TG(class_table), &XG(internal_class_table), (copy_ctor_func_t) xc_zend_class_add_ref, (void *) &tmp_cest, sizeof(tmp_cest)); |
---|
594 | } |
---|
595 | #endif |
---|
596 | TG(internal_class_tail) = TG(class_table).pListTail; |
---|
597 | |
---|
598 | #ifdef ZEND_ENGINE_2_1 |
---|
599 | /* shallow copy, don't destruct */ |
---|
600 | h = OG(auto_globals); |
---|
601 | zend_hash_init_ex(&TG(auto_globals), 8, NULL, NULL, h->persistent, h->bApplyProtection); |
---|
602 | { |
---|
603 | zend_auto_global tmp_autoglobal; |
---|
604 | |
---|
605 | zend_hash_copy(&TG(auto_globals), OG(auto_globals), NULL, (void *) &tmp_autoglobal, sizeof(tmp_autoglobal)); |
---|
606 | zend_hash_apply(&TG(auto_globals), (apply_func_t) xc_auto_global_arm TSRMLS_CC); |
---|
607 | } |
---|
608 | #endif |
---|
609 | |
---|
610 | sandbox->filename = filename; |
---|
611 | |
---|
612 | #ifdef E_STRICT |
---|
613 | sandbox->orig_user_error_handler_error_reporting = EG(user_error_handler_error_reporting); |
---|
614 | EG(user_error_handler_error_reporting) &= ~E_STRICT; |
---|
615 | #endif |
---|
616 | |
---|
617 | return sandbox; |
---|
618 | } |
---|
619 | /* }}} */ |
---|
620 | static void xc_early_binding_cb(zend_op *opline, int oplineno, void *data TSRMLS_DC) /* {{{ */ |
---|
621 | { |
---|
622 | xc_sandbox_t *sandbox = (xc_sandbox_t *) data; |
---|
623 | xc_do_early_binding(CG(active_op_array), OG(class_table), oplineno TSRMLS_CC); |
---|
624 | } |
---|
625 | /* }}} */ |
---|
626 | static void xc_sandbox_install(xc_sandbox_t *sandbox, xc_install_action_t install TSRMLS_DC) /* {{{ */ |
---|
627 | { |
---|
628 | int i; |
---|
629 | Bucket *b; |
---|
630 | |
---|
631 | #ifdef HAVE_XCACHE_CONSTANT |
---|
632 | b = TG(zend_constants).pListHead; |
---|
633 | /* install constants */ |
---|
634 | while (b != NULL) { |
---|
635 | zend_constant *c = (zend_constant*) b->pData; |
---|
636 | xc_install_constant(sandbox->filename, c, |
---|
637 | BUCKET_KEY_TYPE(b), ZSTR(BUCKET_KEY_S(b)), b->nKeyLength TSRMLS_CC); |
---|
638 | b = b->pListNext; |
---|
639 | } |
---|
640 | #endif |
---|
641 | |
---|
642 | b = TG(internal_function_tail) ? TG(internal_function_tail)->pListNext : TG(function_table).pListHead; |
---|
643 | /* install function */ |
---|
644 | while (b != NULL) { |
---|
645 | zend_function *func = (zend_function*) b->pData; |
---|
646 | xc_install_function(sandbox->filename, func, |
---|
647 | BUCKET_KEY_TYPE(b), ZSTR(BUCKET_KEY_S(b)), b->nKeyLength TSRMLS_CC); |
---|
648 | b = b->pListNext; |
---|
649 | } |
---|
650 | |
---|
651 | b = TG(internal_class_tail) ? TG(internal_class_tail)->pListNext : TG(class_table).pListHead; |
---|
652 | /* install class */ |
---|
653 | while (b != NULL) { |
---|
654 | xc_install_class(sandbox->filename, (xc_cest_t*) b->pData, -1, |
---|
655 | BUCKET_KEY_TYPE(b), ZSTR(BUCKET_KEY_S(b)), b->nKeyLength TSRMLS_CC); |
---|
656 | b = b->pListNext; |
---|
657 | } |
---|
658 | |
---|
659 | #ifdef ZEND_ENGINE_2_1 |
---|
660 | /* trigger auto_globals jit */ |
---|
661 | for (b = TG(auto_globals).pListHead; b != NULL; b = b->pListNext) { |
---|
662 | zend_auto_global *auto_global = (zend_auto_global *) b->pData; |
---|
663 | /* check if actived */ |
---|
664 | if (auto_global->auto_global_callback && !auto_global->armed) { |
---|
665 | zend_u_is_auto_global(BUCKET_KEY_TYPE(b), ZSTR(BUCKET_KEY_S(b)), auto_global->name_len TSRMLS_CC); |
---|
666 | } |
---|
667 | } |
---|
668 | #endif |
---|
669 | |
---|
670 | if (install != XC_InstallNoBinding) { |
---|
671 | xc_undo_pass_two(CG(active_op_array) TSRMLS_CC); |
---|
672 | xc_foreach_early_binding_class(CG(active_op_array), xc_early_binding_cb, (void *) sandbox TSRMLS_CC); |
---|
673 | xc_redo_pass_two(CG(active_op_array) TSRMLS_CC); |
---|
674 | } |
---|
675 | |
---|
676 | i = 1; |
---|
677 | zend_hash_add(&OG(included_files), sandbox->filename, strlen(sandbox->filename) + 1, (void *)&i, sizeof(int), NULL); |
---|
678 | } |
---|
679 | /* }}} */ |
---|
680 | void xc_sandbox_free(xc_sandbox_t *sandbox, xc_install_action_t install TSRMLS_DC) /* {{{ */ |
---|
681 | { |
---|
682 | /* restore first first install function/class */ |
---|
683 | #ifdef HAVE_XCACHE_CONSTANT |
---|
684 | EG(zend_constants) = OG(zend_constants); |
---|
685 | #endif |
---|
686 | CG(function_table) = OG(function_table); |
---|
687 | CG(class_table) = OG(class_table); |
---|
688 | EG(class_table) = CG(class_table); |
---|
689 | #ifdef ZEND_ENGINE_2_1 |
---|
690 | CG(auto_globals) = OG(auto_globals); |
---|
691 | #endif |
---|
692 | |
---|
693 | if (install != XC_NoInstall) { |
---|
694 | CG(in_compilation) = 1; |
---|
695 | CG(compiled_filename) = sandbox->filename; |
---|
696 | CG(zend_lineno) = 0; |
---|
697 | xc_sandbox_install(sandbox, install TSRMLS_CC); |
---|
698 | CG(in_compilation) = 0; |
---|
699 | CG(compiled_filename) = NULL; |
---|
700 | |
---|
701 | /* no free as it's installed */ |
---|
702 | #ifdef HAVE_XCACHE_CONSTANT |
---|
703 | TG(zend_constants).pDestructor = NULL; |
---|
704 | #endif |
---|
705 | TG(function_table).pDestructor = NULL; |
---|
706 | TG(class_table).pDestructor = NULL; |
---|
707 | } |
---|
708 | |
---|
709 | /* destroy all the tmp */ |
---|
710 | #ifdef HAVE_XCACHE_CONSTANT |
---|
711 | zend_hash_destroy(&TG(zend_constants)); |
---|
712 | #endif |
---|
713 | zend_hash_destroy(&TG(function_table)); |
---|
714 | zend_hash_destroy(&TG(class_table)); |
---|
715 | #ifdef ZEND_ENGINE_2_1 |
---|
716 | zend_hash_destroy(&TG(auto_globals)); |
---|
717 | #endif |
---|
718 | zend_hash_destroy(TG(included_files)); |
---|
719 | |
---|
720 | /* restore orig here, as EG/CG holded tmp before */ |
---|
721 | memcpy(&EG(included_files), &OG(included_files), sizeof(EG(included_files))); |
---|
722 | |
---|
723 | #ifdef E_STRICT |
---|
724 | EG(user_error_handler_error_reporting) = sandbox->orig_user_error_handler_error_reporting; |
---|
725 | #endif |
---|
726 | |
---|
727 | if (sandbox->alloc) { |
---|
728 | efree(sandbox); |
---|
729 | } |
---|
730 | } |
---|
731 | /* }}} */ |
---|
732 | int xc_vtrace(const char *fmt, va_list args) /* {{{ */ |
---|
733 | { |
---|
734 | return vfprintf(stderr, fmt, args); |
---|
735 | } |
---|
736 | /* }}} */ |
---|
737 | int xc_trace(const char *fmt, ...) /* {{{ */ |
---|
738 | { |
---|
739 | va_list args; |
---|
740 | int ret; |
---|
741 | |
---|
742 | va_start(args, fmt); |
---|
743 | ret = xc_vtrace(fmt, args); |
---|
744 | va_end(args); |
---|
745 | return ret; |
---|
746 | } |
---|
747 | /* }}} */ |
---|